A lightweight (the actual ship is heavy though), performat & powerful sharder for Discord.JS. Indomitable uses cluster module to evenly spread her weight (load) across your cores

const { Indomitable } = require('indomitable');
const { Client } = require('discord.js');
const token = 'your_token';

const manager = new Indomitable({ client: Client, token })
    .on('error', console.error);

manager.spawn();

const { Indomitable } = require('indomitable');
const { Client } = require('discord.js');
const token = 'your_token';

const options = {
    // Processes to run
    clusterCount: 2,
    // Websocket shards to run
    shardCount: 8,
    // Discord.JS options
    clientOptions: {
        intents: [1 << 0] // Bitwise for GUILD intent only
    },
    // Auto restart processes that have been killed
    autoRestart: true, // This defaults to false by default unless you specify it
    // Your Discord.JS client
    client: Client,
    // Your bot token
    token
}

const manager = new Indomitable(client)
    .on('error', console.error);

manager.spawn();

// Saya's note:
// Not recommended as every broadcastEval uses eval() internally
// Consider learning the ipc system of this library in future to get data across your clusters
client.shard
    .broadcastEval(client => client.guilds.cache.size)
    .then(console.log);